Window Tint Laws by State (2026)

How to read tint percentages

VLT stands for visible light transmission: the share of outside light that makes it through the glass. A 35% limit means the window, with film applied, has to let at least 35% of light through.

The number that matters is the combined reading, not the number on the film box. Factory glass already blocks some light, so a film rated at 35% installed over factory glass that passes about 80% of light will read close to 28% on a meter. That's why a shop working in a 35% state usually reaches for a lighter film than the limit suggests, especially on vehicles with factory privacy glass.

To estimate the combined reading, multiply the two numbers. A 50% film over 80% glass gives 0.50 × 0.80 = 40%.

What the AS-1 line is

Most windshields have a small "AS-1" mark printed near the top corner. It marks how far down from the top tint is allowed in states that use it. Where there's no AS-1 mark, states usually set a fixed strip instead, typically the top 4, 5 or 6 inches. A few states, such as Minnesota, don't allow any aftermarket tint on the windshield.

Reflectivity limits

Some states also cap how reflective a film can be, since mirrored film can glare into other drivers' eyes. The limit is a maximum percentage of light the window can reflect. States like Oregon (13%) are strict, while others only ban mirrored or metallic finishes without setting a number. Most quality dyed, carbon and ceramic films fall well under any state's reflectivity limit, but metalized films are worth checking.

SUVs, vans and trucks

Many states treat multipurpose vehicles differently from sedans. In states like Georgia, South Carolina and Virginia, windows behind the driver on an SUV or van can be any darkness, while a sedan in the same state has a set limit. Some states, such as Florida and Kentucky, allow darker tint behind the driver on these vehicles but still set a number. Each state page lists its rule.

Medical exemptions

Most states let drivers with certain medical conditions run darker tint than the law normally allows. The process usually requires a signed statement from a physician or optometrist, and some states require an application to the state police or DMV and a permit kept in the vehicle. Rules and renewal periods vary, so check with the state agency before installing tint under an exemption.

How police measure tint

Officers use a handheld tint meter that reads light transmission through the side window. Many states build a tolerance into the law, often 3%, to account for meter variation. In Georgia, for example, a 28% limit allows readings down to 25%. A tolerance is not a target, though, so the safest install is one that meets the limit outright.

For tint shops: keeping every install compliant

When a customer asks for darker tint than their state allows, the shop is often the one answering for it. A few habits protect you:

1. Meter every window before and after the install, and record the reading on the job.
2. Note the vehicle type, since SUV and sedan rules often differ in the same state.
3. Give the customer the legal limits for their state in writing, especially when they're driving in from out of state.
4. Apply a compliance label where your state requires one, such as Alabama and Florida.
5. Keep a copy of any medical exemption with the customer's job record.

Logging VLT readings on each job also gives you a record if a customer gets a ticket and says your shop installed illegal film.

Frequently asked questions

What is the darkest legal tint in the US?

For front side windows on a sedan, New Mexico allows the darkest tint at 20%. Montana and Washington allow 24%, and Arkansas, Louisiana, Oklahoma and Texas allow 25%. Behind the driver, many states allow any darkness, especially on SUVs and vans.

Does factory tint count toward the limit?

Yes. Limits apply to the total light passing through the window, which includes the glass. Factory privacy glass on most SUVs is installed behind the driver, where many states have no limit, but film added over it still has to meet any rule that applies to those windows.

Do I have to follow my home state's tint law when I drive in another state?

Generally your vehicle is judged by the laws of the state where it's registered, and many states write that into their tint laws. That isn't universal, so drivers who regularly cross state lines should check the rules where they drive most.

Can I get a ticket for tint that was legal when it was installed?

Yes, if the law has changed since. When a state makes its limits stricter, older installs usually have to come into compliance. Most recent changes, like those in Georgia, Iowa and Delaware, went the other way and allowed darker tint.

How often is this chart updated?

We review every state at least once a year and update individual states as soon as a law change is signed. Each state page shows the date it was last verified.

Sources and methodology

Every limit on this page was checked against the state statute, regulation or official agency guidance cited on that state's page, along with recent legislative records for any 2025 or 2026 changes. Laws change and enforcement varies by county and city, so treat this chart as a reference, not legal advice. If you see a limit that has changed, email support@tintflowx.com and we'll review it.